| Vaquillas-Borrego G-4-189391 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 92K | 3.44M | May 2002 – Aug 2016 |
| Slator Ranch "A" G-4-175017 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 64.7K | 3.15M | Nov 1999 – Apr 2026 |
| Slator Ranch "A" G-4-175486 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 62.3K | 4.16M | Dec 1999 – Apr 2026 |
| Slator Ranch "A" G-4-173763 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 56.7K | 4.17M | Jul 1999 – Apr 2026 |
| BMT/K&H "B" G-4-178052 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 52.3K | 3.8M | Jul 2000 – Apr 2026 |
| Vaquillas-Borrego G-4-188871 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 49.9K | 3.3M | May 2002 – Aug 2016 |
| BMT/K&H G-4-183460 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 49.2K | 3.52M | May 2001 – Aug 2010 |
| BMT/K & H "B" G-4-176451 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 48.4K | 5.27M | Mar 2000 – Apr 2026 |
| BMT/K&H "B" G-4-183475 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 39.2K | 2.73M | Jun 2001 – Apr 2026 |
| BMT/K&H G-4-181384 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 37.2K | 6.31M | Feb 2001 – Apr 2026 |
| BMT/K&H G-4-177527 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 33.7K | 8.56M | May 2000 – Apr 2026 |
| Cabezon G-4-245457 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 33.5K | 1.46M | Nov 2007 – Apr 2026 |
| Thomasma, Ray J. G-4-198842 | Hilcorp Energy Company only | Zwebb (10350) | Zapata | 1 | 32.7K | 4.08M | Nov 2003 – Apr 2026 |
| Thomasma, Ray J. G-4-197050 | Hilcorp Energy Company only | Zwebb (10350) | Zapata | 1 | 31K | 4.87M | Sep 2003 – Apr 2026 |
| Cabezon G-4-189382 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 30K | 810K | Feb 2002 – Apr 2026 |
| Cabezon G-4-237464 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 27.8K | 656K | Apr 2008 – Apr 2026 |
| Cabezon G-4-188849 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 24.6K | 664K | Apr 2002 – Apr 2026 |
| Cabezon G-4-246190 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 24.2K | 485K | Oct 2008 – Apr 2026 |
| BMT/K&H G-4-185467 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 23.7K | 3.65M | Aug 2001 – Apr 2026 |
| Vaquillas-Borrego G-4-187514 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 22.6K | 3.84M | Feb 2002 – Jan 2016 |
| McGrath G-4-182944 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 22K | 7.01M | Apr 2001 – Apr 2026 |
| Vaquillas-Borrego G-4-219603 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 21.7K | 931K | May 2006 – Jan 2016 |
| State Tract 838 G-4-204361 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 21.6K | 1.34M | Aug 2004 – Apr 2026 |
| Vaquillas-Borrego G-4-191511 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 21.1K | 3.19M | Sep 2002 – Aug 2016 |
| McGrath G-4-200375 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 20.7K | 2.39M | Mar 2004 – Aug 2018 |
| Slator Ranch "B" G-4-175528 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 20.4K | 1.84M | Jan 2000 – Apr 2026 |
| McGrath G-4-183853 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 19.5K | 3.61M | Jun 2001 – Apr 2026 |
| BMT/K&H G-4-184520 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 19K | 4.24M | Jul 2001 – Apr 2026 |
| Mc Grath G-4-189425 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 18.8K | 3.85M | Jun 2002 – Apr 2026 |
| BMT/K&H G-4-178588 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 17.9K | 3.99M | Aug 2000 – Apr 2026 |
| McGrath G-4-191101 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 17.8K | 3.99M | Jul 2002 – Apr 2026 |
| BMT/K&H G-4-179473 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 17K | 2.25M | Oct 2000 – Oct 2023 |
| Slator Ranch B G-4-174612 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 16.8K | 2.1M | Sep 1999 – Apr 2026 |
| BMT/K&H G-4-179827 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 16.3K | 3.35M | Oct 2000 – Apr 2026 |
| BMT/K&H G-4-182797 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 16.3K | 6.35M | May 2001 – Apr 2026 |
| Cabezon G-4-202928 | EOG Resources, Inc. only | Zwebb (10350) | Webb | 1 | 15.3K | 217K | Jul 2004 – Jan 2012 |
| Cabezon G-4-231177 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 15.2K | 729K | Sep 2007 – Apr 2026 |
| Thomasma, Ray J. "B" G-4-223916 | Hilcorp Energy Company only | Zwebb (10350) | Webb | 1 | 12.7K | 2.06M | May 2004 – Apr 2026 |
| BMT/K&H "F" G-4-178051 | EOG Resources, Inc. only | Zwebb (10350) | Webb | 1 | 12.2K | 488K | Jul 2000 – Aug 2010 |
| BMT/K&H G-4-180279 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 12K | 2.48M | Dec 2000 – Apr 2026 |
| McGrath G-4-186023 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 11.9K | 2.83M | Oct 2001 – Apr 2026 |
| BMT/K&H G-4-178706 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 11.7K | 2.64M | Aug 2000 – Apr 2015 |
| Slator Ranch C G-4-174219 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 11.6K | 1.2M | Aug 1999 – Apr 2026 |
| Vaquillas-Borrego G-4-193820 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 11.4K | 783K | Feb 2003 – Jul 2015 |
| BMT/K&H G-4-188141 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 10.8K | 2.82M | Mar 2002 – Apr 2026 |
| Cabezon G-4-246989 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 10.8K | 461K | Jan 2009 – Apr 2026 |
| Slator Ranch "A" G-4-177401 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 10.6K | 954K | May 2000 – May 2025 |
| BMT/K&H G-4-180616 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 10.2K | 2.19M | Jan 2001 – Nov 2011 |
| Slator Ranch "B" G-4-189375 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 10.1K | 1.02M | Apr 2002 – Apr 2026 |
| McGrath "A" G-4-203559 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 9.57K | 1.46M | Jun 2004 – Apr 2026 |